At 0:59 into Varien's breakdown of his track Morphine, he opens up one instan... more

At 0:59 into Varien's breakdown of his track Morphine, he opens up one instance of Kontakt 5 which also show some of his favorite sample libraries, one of which can be identified as Spitfire's Albion II: Loegria.

Throughout Varien's Youtube video, instances of Kontakt 5 appear in the chann... more

Throughout Varien's Youtube video, instances of Kontakt 5 appear in the channel strips for his song "Morphine". Additionally, at the 59 second mark he opens an instance of Kontakt and says "I've got my Kontakt 5 here, Kontakt 5 is where I have all my fancy synths and, y'know, choirs, strings, organs, blah-blah that you love so much about the Varien sound, it's all in here..."

As seen in the FL Studio browser in this here given video by Varien, in the F... more

As seen in the FL Studio browser in this here given video by Varien, in the Fruity Wrapper files where the presets for external VSTs are located (including internal ones), there is a folder for Synplant, which implies that Varien uses the synthesizer itself.

In his YouTube video, Varien uses various samples labeled with "VDE" (which s... more

In his YouTube video, Varien uses various samples labeled with "VDE" (which stands for Vengeance Dirty Electro) and no single digit after them (which often indicates which volume that sample is from). As such, it's likely to be Vengeance Dirty Electro Vol. 1.